US20150259544A1 - Peelable flexible coatings, compositions and methods thereof - Google Patents

Peelable flexible coatings, compositions and methods thereof Download PDF

Info

Publication number
US20150259544A1
US20150259544A1 US14/434,033 US201314434033A US2015259544A1 US 20150259544 A1 US20150259544 A1 US 20150259544A1 US 201314434033 A US201314434033 A US 201314434033A US 2015259544 A1 US2015259544 A1 US 2015259544A1
Authority
US
United States
Prior art keywords
coating
polymer
polyurethane
coated
particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/434,033
Other languages
English (en)
Inventor
Doo-Hyun Lee
Farhad Fattahi
Kui Chen-Ho
Syud M. Ahmed
Kusum Gosain
Feng Bai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Assigned to 3M INNOVATIVE PROPERTIES COMPANY reassignment 3M INNOVATIVE PROPERTIES COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, DOO-HYUN, FATTAHI, Farhad, AHMED, Syud M., GOSAIN, KUSUM, BAI, FENG, CHEN-HO, KUI
Publication of US20150259544A1 publication Critical patent/US20150259544A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]

Definitions

  • This description generally relates to compositions and coatings for surfaces such as floors, walls, furniture and any equipment requiring surface protection.
  • polyurethanes generally exhibit relatively low peel strength i.e., having poor adhesion to surfaces, compared to adhesives such as epoxies due to polyurethane's low adhesion strength to surfaces, it tends to delaminate.
  • polyurethane coatings typically show easy film breakage and detachment from a coated surface when attempts are made to remove it from the surface.
  • Surface primers have been used to improve adhesion to the surface.
  • primer application steps create further downtime, and furthermore, solvents used in primers may induce cracking in polyurethanes.
  • a high-strength compatible adhesive layer is used to improve adhesion of the coating to the surface, but resulting in increased costs and downtime.
  • a peelable, flexible coating for a surface comprising a polymer blend comprising polyurethane as a major component, and at least a polymer P 2 having in comparison to polyurethane a higher peel strength to the surface to be coated and a higher percent elongation at break when cured for imparting a flexible and a peelable quality to the coating.
  • a coating composition for forming a peelable, flexible coating on a surface comprising an aqueous blend of a first polymer dispersion D 1 comprising polyurethane as a major component, and a second polymer dispersion D 2 comprising a polymer P 2 , polymer P 2 having higher peel strength to the surface to be coated and higher percent elongation at break when cured in comparison to polyurethane.
  • FIG. 1 is a sectional view of a coating applied to a surface with particles of a uniform average size.
  • FIG. 2A is a sectional view of a coating applied to a surface with particles protruding above the coating surface.
  • FIG. 2B is a sectional view of a coating applied to a surface with particles of different sizes.
  • FIG. 3 shows a photograph of a partially peeled coating.
  • FIG. 4 shows a photograph of an uncoated vinyl tile surface.
  • FIG. 5 shows a photograph of a micron-sized polypropylene particle coated vinyl tile surface.
  • FIG. 6 shows another photograph of a micron-sized polypropylene particle coated vinyl tile surface.
  • FIG. 9 shows the variation of slip resistance under wet conditions.
  • compositions, coatings and methods disclosed herein are capable of being made, practiced, used, carried out and/or formed in various ways expected of a skilled person in the field once an understanding of the invention is acquired.
  • Numerical indicators, such as first, second, and third, as used in the description and the claims to refer to various structures or method steps, are not meant to be construed to indicate any specific structures or steps, or any particular order or configuration to such structures or steps. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context.
  • the present disclosure provides a peelable flexible coating that comprises a polymer blend comprising polyurethane as a major component, and a polymer P 2 having in comparison to polyurethane a higher peel strength to the surface to be coated as well as higher percent elongation at break when cured.
  • the term ‘blend’ refers to any form of polymer blend, including immiscible polymer blends (or heterogeneous polymer blends) having two glass transition temperatures, compatible polymer blends exhibiting macroscopically uniform physical properties due to sufficiently strong interactions between the component polymers, and miscible polymer blends (homogeneous polymer blend) observing a single-phase structure with one glass transition temperature.
  • miscible polymer blends homogeneous polymer blend
  • Peel strength is a measure of adhesive bond strength, and can defined by various measurements, such as the average load required to part two bonded materials per 25 mm separation, or the average load per unit width of bond line required to part two bonded materials where the angle of separation is 180 degrees and separation rate is 6 inches per minute (ASTM D-903).
  • Percent elongation at break of a material refers to its strain at fracture, expressed as a percentage of its initial length. It is a measure of a material's flexibility in terms of how it will deform and strain when weight or force is applied, and may be expressed in terms of percent elongation at break as referenced throughout this application. By definition, flexible materials have a high percent elongation at break, and stiffer materials have a low percent elongation at break. In other words therefore, P 2 is selected from a polymer that exhibits greater flexibility and higher adhesive bond strength to the surface to be coated than polyurethane.
  • polymer P 2 is selected from a polymer having a higher peel strength to the surface to be coated relative to polyurethane.
  • polymer P 2 has a peel strength of more than 5 N/25 mm, or more preferably more than 10 N/25 mm, or in some examples more than 20 N/25 mm or 25 N/25 mm, so that when blended with polyurethane, the coating achieves a peel strength greater than polyurethane alone, of between about 1 N/25 mm to 20 N/25 mm, or in some cases between 1 to 10 N/25 mm.
  • the act of peeling the coating can be carried out by hand manually.
  • peeling may be carried out with the aid of tools, or by incorporating peel tabs at various parts of the coating.
  • the peel strength (ASTM D1000) of the coating to the surface is about 10 N/25 mm or preferably about 5 N/25 mm.
  • various 3M Scotch Weld polyurethane reactive adhesives or structural adhesives exhibit peel strengths commonly above 250-300 N/25 mm by comparison.
  • polymer P 2 has, in addition to the properties of higher peel strength, a higher percent elongation at break in comparison to polyurethane.
  • various polyurethane coatings may show elongation at break values of less than 25%, or less than 50%, or less than 100%.
  • the elongation at break characteristic of polymer P 2 is not fixed, but relative to the polyurethane present.
  • polymer P 2 has a percent elongation at break of more than 200%, or more preferably more than 500% elongation at break.
  • P 2 is selected from polyesters, polyurethane-acrylates (PUA), polyacrylates, polyvinyl alcohol, polyvinyl acetate, acrylate modified polyolefins, and a combination thereof.
  • Polymer P 2 may also be selected from soft or elastomeric thermoplastic polyurethanes having soft segment domains having polyol/polyether/polyester linkages, blended with the major component of polyurethane with hard segment domains having urethane linkages.
  • polymer P 2 may be selected from polymers compatible with polyurethane, i.e., capable of homogeneous blending with polyurethane. Polyurethane and polymer P 2 may both comprise a water dispersible polymer.
  • P 2 comprises a pressure sensitive adhesive (PSA) polymer.
  • PSA pressure sensitive adhesive
  • suitable PSA polymers include PSAs that contain elastomers such as acrylics, ethylene vinyl acetate, vinyl ethers and styrene block copolymers.
  • the coating may be formed as a single layer adhering directly to the surface to be coated, as no surface primer or intermediate adhesive layer or tackifier is required.
  • the single layer coating may be formed through the application of one coat, or through the application of multiple coats.
  • One coat may be suitable for forming a thin layer, whereas multiple coats of 2, 3, 4, or more coats successively may be suitable for forming a thick layer.
  • the coating thickness may range from a thin layer of 100 microns, or 10 microns, or less, to a thick layer of 1000 microns, or 10000 microns, or more.
  • the typical thickness of a coating ranges from 100 microns to 200 microns.
  • the coating is formed from a plasticizer-free coating formulation.
  • plasticizer-free it is meant that the coating is at least substantially, or totally, free of conventional plasticizers used to increase the plasticity or fluidity of the coating composition.
  • phthalate-based plasticizers such as di-isooctyl phthalate (DIOP) or other phthalate esters have been commonly used plasticizers. The absence of such compounds renders the coating composition plasticizer free.
  • Phthalate-free formulations are desirable because of the documented harmful effects of phthalates on the human body. The presence of minute or trace quantities of such plasticizers, such as a content of less than 0.1% by weight, or more preferably less than 0.01% by weight, may inadvertently be present and may be considered essentially plasticizer free.
  • the coating further comprises a third polymer P 3 having higher peel strength to the surface to be coated and/or higher percent elongation at break than polymer P 2 when cured.
  • Polymer P 3 is provided as an adhesion and modulus modifier to complement P 2 , compensating for weaker properties in P 2 .
  • the addition of a third polymer P 3 may be used to achieve coating properties that are unachievable through the combination of polyurethane and polymer P 2 alone.
  • P 3 may be selected from a polymer that on its own forms a very soft & flexible film when cured.
  • the coating may comprise three different polymers, namely, polyurethane, a second polymer P 2 and a third polymer P 3 .
  • polymer P 2 has higher peel strength than polyurethane but percent elongation at break that is similar or marginally higher than polyurethane
  • polymer P 3 has higher percent elongation at break than P 2 , hence compensating for the low flexibility of P 2 .
  • polymer P 2 has higher percent elongation at break than polyurethane but similar or marginally better adhesion to a specified substrate, and a third polymer P 3 which provides better adhesion to the substrate than P 2 , hence compensating for the low peel strength of P 2 .
  • polymer P 3 may be selected to compensate for poor peel strength and/or poor flexibility of polymer P 2 .
  • P 3 may be selected from polymers that exhibit greater than 700%, or 1000% elongation at break, and high peel strength of greater than 25 N/25 mm, or greater than 30 N/25 mm.
  • P 3 may also be selected from polymers having other properties such as chemical resistance and thermal resistance or to modify the minimum film formation temperature (MFFT) the glass transition temperature of the polymer blend.
  • MFFT minimum film formation temperature
  • P 3 comprises a polymer having MFFT of about 0° C. or less, and a glass transition temperature substantially similar to the minimum film formation temperature. This enables film formation at room temperature.
  • P 3 comprises a polymer having a combination of MFFT of less than 0° C. and 1000% elongation at break to facilitate film formation without co-solvent added and to impart flexible properties to the cured coating.
  • the coating may comprise 60% to 90% by weight of polyurethane and 10% to 40% by weight of polymer P 2 (dry solid content).
  • polymer P 2 comprises polyacrylate present in an amount such that the weight ratio of polyurethane to polyacrylate in the coating is between 1 to 10.
  • polymer P 2 comprises polyurethane with soft segment domains having polyol/polyether/polyester linkages, blended with polyurethane with hard segment domains having urethane linkages.
  • the coating may comprise any of the following compositional combinations: (i) 60% polyurethane+40% polyurethane-acrylates, (ii) 70% polyurethane+30% polyacrylates, (iii) 80% polyurethane+20% polyurethane, (iv) 90% polyurethane+10% polyvinylalcohol.
  • the coating may comprise 60% to 90% by weight of polyurethane, 5% to 30% by weight of polymer P 2 , and 5% to 30% by weight of polymer P 3 .
  • the coating may comprise any of the following compositions: (i) 60% polyurethane+30% polyurethane-acrylates+10% polyvinylacetate; (ii) 70% polyurethane+20% polyacrylates+polyesters.
  • the coating further comprises particles distributed or dispersed in the polymer blend.
  • the polymer blends of polyurethane and polymer P 2 , and optionally polymer P 3 , as described above provide a convenient peelable, flexible matrix for holding various types of particulate materials that serves various functions.
  • contemplated particulate materials include desiccants, fire retardants, antifouling materials, disinfectants, ultraviolet absorbing materials, heat absorbing materials, photocatalysts, aromatic compounds, insecticides, color pigments, reflective materials and high refractive index materials.
  • the particulate materials comprise slip resistant granules (or particles).
  • slip resistant granules may comprise an organic selected from the group consisting of polyolefin, polyacrylate, polyester, nylon, polycarbonate, polyoxymethylene, fluoropolymer, styrene, and polyurethane.
  • Slip resistant granules may comprise thermoplastic polyolefins such as polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), polybutene-1 (PB-1); as well as polyolefin elastomers such as polyisobutylene (PIB), Ethylene propylene rubber (EPR), ethylene propylene diene monomer (M-class) rubber (EPDM rubber).
  • PE polyethylene
  • PP polypropylene
  • PMP polymethylpentene
  • PB-1 polybutene-1
  • PIB polyisobutylene
  • EPR Ethylene propylene rubber
  • M-class ethylene propylene diene monomer
  • slip resistant granules comprise Polypropylene (PP) granules.
  • PP granules can be purchased inexpensively. They were found to provide good compositional stability due to its density and non-polar nature. When cured, polypropylene granules were found to provide high slip resistance, as well as similar refractive index to the polyurethane of about 1.4 to 1.5, which can help maintain the high gloss on the coating surface. Its low density of 0.8 g/cc at 25° C., can improve the storage stability of the final coating product without precipitation. Also, the blocky shape of polypropylene granules helps to prevent injury in the event of fall/slip accident.
  • the coating may be formed using a coating composition comprising between 1% to 10% by weight of polypropylene granules, or preferably between 1% to 5% by weight of polypropylene granules.
  • Slip resistant granules may also comprise inorganic materials selected from the group consisting of calcium carbonate, talc, barytes, clays, silicas, titanium dioxide, carbon black, organo-clay, alumina, and carbon nanotubes, glass bubbles, silicon carbide, quartz, cerium oxide, silica, ceramic particles, and ground minerals.
  • inorganic materials selected from the group consisting of calcium carbonate, talc, barytes, clays, silicas, titanium dioxide, carbon black, organo-clay, alumina, and carbon nanotubes, glass bubbles, silicon carbide, quartz, cerium oxide, silica, ceramic particles, and ground minerals.
  • Other types of materials such as ionomers, rubber particles, core-shell particles, or engineering plastic polymers with high temperature resistance such as polyether ether ketone (PEEK) and polyethersulfone (PES) may be used to achieve slip resistance.
  • PEEK polyether ether ketone
  • PES polyethersulfone
  • the slip resistant granules may have a size of between 10 to 1000 microns, or in exemplary embodiments, between 30 to 400 microns.
  • a combination of large particles and small particles, as illustrated in the figures, may also be used.
  • the particles are selected to be of a size that is less than the thickness of the coating to be applied. Where high slip resistance is required, large particles that exceed coating thickness may be selected in order for the particles to protrude from the coating, thereby providing greater surface contact for increasing contact friction. Beyond a certain size threshold, the particles may cause the coating to lose its glossy appearance due to the lower light scattering ability of the larger particles. Hence, an optimal range exists where an acceptable balance between slip resistance and glossiness may be achieved, if glossiness is a consideration.
  • this optimal range occurs with formulations that comprises particles with a size of between about 60 to 200 microns.
  • a formulation can exhibit slip resistance of at least 20 BNP, or at least 25 or more preferably at least 30 BNP, as tested by the British Pendulum Slip Resistance Tester under wet conditions, and gloss of at least 20 GU, or at least 30 GU, or at least 40 GU, or more preferably at least 50 GU at 60° as measured by a standard glossmeter (ISO 2813).
  • pre-existing finish coatings on the surface to be coated may interfere with the adhesion between the peelable coating and the surface.
  • peelability issues may arise due to the different adhesion levels between the coating and the surface, leading to excessively high or low levels of adhesion between the coating and the surface.
  • floor substrates may have been coated with various floor finish coating products comprising polymeric materials such as acrylic polymers or polyurethane coating resins for floor protection. These various floor finish coatings can increase or decrease the peel strength of the peelable coating to be applied, hence affecting the peelable performance of the coating to be applied.
  • a primer coating layer may be added as an intermediate layer between the peelable coating to be applied and the pre-existing floor finish, i.e., in this embodiment, the coating further comprises a primer layer arranged between the coating and the surface.
  • the primer layer provides a predictable interface for the peelable coating, so that consistent peelability or peel strength is achieved regardless of the floor finish coating present.
  • the primer layer comprises a release coating for decreasing the adhesion of the coating to the surface.
  • the release coating may comprise surface active agents, such as polymers that have low surface energy, as exemplified by acrylic polymers and polyurethane polymers that are silicone or fluorine modified, or fluoropolymers which are synthesized from fluorinated monomers that have a certain degree of substitution of carbon chain hydrogen by fluorine.
  • Polymer coatings that exhibit relatively low surface energy such as paraffin, polypropylene, polyethylene and polytetrafluoroethylene (PTFE), may also be suitable as release coatings.
  • the primer comprises at least one of a fluorinated compound, fluoropolymer or fluorine modified polymer, an acrylic polymer, a polyurethane, a polyurethane acrylate, a silicone compound, a silicone modified polymer, paraffin wax, polypropylene wax, polyethylene wax, and mixtures thereof.
  • the adhesion peel strength of the peelable coating to the floor surface may also be tuned to a desired range by incorporating surface active materials, particularly low surface energy additives, directly into the coating, without using a primer layer, or optionally, in combination with a primer layer as described in the foregoing paragraphs.
  • surface active materials particularly low surface energy additives
  • low surface energy polymers similar to those used for the primer layer may be added as an adhesion modifying additive to the peelable coating, or alternatively to the floor finish.
  • suitable low surface energy materials include polymeric fluorochemical surfactants such as 3M NovecTM fluorosurfactants, silicone polyethers available from Dow Corning Inc., low tack adhesives such as styrene/acrylic acid copolymer microspheres, and hexafluoropropylene oxide (HFPO).
  • polymeric fluorochemical surfactants such as 3M NovecTM fluorosurfactants
  • silicone polyethers available from Dow Corning Inc.
  • low tack adhesives such as styrene/acrylic acid copolymer microspheres
  • HFPO hexafluoropropylene oxide
  • the primer layer comprises an adhesion promoter for increasing the adhesion of the coating to the floor surface.
  • an adhesion promoter for increasing the adhesion of the coating to the floor surface. This may be useful in cases where the surface to be coated contains low surface energy materials, such as polypropylene, polyethylene, polytetrafluoroethylene (PTFE), or have resins/oil/wax from the floor timber accumulating on the surface over time, for example.
  • the primer layer is an interface or intermediate layer serving other functions than adhesion modification, such as a primer layer functioning as a protective layer (e.g., a polycarbonate primer layer), or as a backing to enable the peelable layer to be cohesively detached from a substrate surface, or a coloring layer, for example.
  • Base additives may be present in the coatings to achieve the necessary physical or chemical properties required in a specific application.
  • base additives may be added to the liquid coating composition before application to the surface to be coated.
  • the additives may comprise volatile compounds that vaporize away during the curing of the coating, or it may comprise non-volatile compounds that stay in the coating after curing.
  • polymer P 2 is selected to form a partially immiscible blend with polyurethane
  • polar or partially polar organic co-solvents may be added to enable miscibility between the polymers present.
  • Rheology modifiers may be added to control the viscosity of the composition. For example, a specific application may require the composition to be sufficiently viscous to appropriately suspend slip resistant particles in the composition.
  • the viscosity of the composition should facilitate uniformly loading the particles on an applicator prior to actual application. It may also be important that the viscosity of the composition be such that the composition does not excessively flow when being applied but permits an applicator to control the final thickness of the resulting floor coating.
  • Further examples of base additives include defoamers, leveling agents, and organic wax emulsions.
  • additives such as biocides, pigments, fillers, colorants, dyes, anti-cratering agents and anti-sagging agents may also be added to the coating.
  • Coating 110 is formed directly on the surface 120 of an item 130 to be coated.
  • Coating 110 comprises a cured polymer matrix 112 , made up of a blend of polyurethane and polymer P 2 , and optionally other components such as polymer P 3 and base additives, and slip resistant particles 114 dispersed throughout the matrix 112 .
  • the particles 114 have a diameter that is smaller than the thickness of the coating 110 , hence they remain largely embedded within the coating 110 .
  • Some surface particles 115 may randomly be present at the surface 116 .
  • the proportion of surface particles 115 may increase with the use of larger quantities of particles 114 , resulting in an increase in the coefficient of friction of surface 116 of the coating 110 , as compared to the coefficient of friction of surface 116 comprising purely of cured polymer matrix 112 or with smaller quantities of particles 114 .
  • a coated surface 200 comprising coating 210 formed directly on an item 230 to be coated.
  • Coating 210 comprises a cured polymeric matrix 212 and slip resistant particles 218 present throughout the matrix 112 .
  • the particles 218 have a diameter that is equal to or exceeds the thickness of the coating 210 , so particles 218 protrude above the coating surface 216 .
  • the protruding portions 222 of particles 218 may help to significantly increase the overall coefficient of friction of surface 216 of the coating 210 . As all particles 218 provide a protruding portion 222 , the coefficient of friction increases with the amount of particles 218 added to the coating 210 .
  • coating 210 comprises a cured polymeric matrix 212 and particles 214 , 218 of two different sizes present throughout the matrix 112 .
  • Particles 218 may comprise slip resistant granules whereas particles 214 may comprise reflective materials for increasing the glossiness of the coating.
  • the particles 214 have a diameter that is smaller than the thickness of the coating, so particles 214 remain largely embedded within the coating 210 , while the particles 218 have a diameter that is equal to or exceeds the thickness of the coating 210 , so particles 218 protrude above the coating surface 216 to increase the overall coefficient of friction of surface 216 of the coating 210 .
  • a coating composition for forming a peelable flexible coating for a surface as described in the foregoing paragraphs, comprising an aqueous blend of a first polymer dispersion D 1 comprising polyurethane as a major component, and a second polymer dispersion D 2 comprising a polymer P 2 having a higher peel strength to the surface to be coated and higher percent elongation at break when cured in comparison polyurethane.
  • the term ‘dispersion’ in this context conforms to the definition in the IUPAC Compendium of Chemical Terminology (2007), which defines a dispersion to be a material comprising more than one phase, where at least one of the phases consists of finely divided phase domains, often in the colloidal size range, distributed throughout a continuous phase domain.
  • the first polymer dispersion D 1 may comprise a water-based polyurethane dispersion (PUD), such as commercially available polyurethane dispersions from Dow (e.g., SYNTEGRA® polyurethane dispersions) or from Bayer (e.g., Bayhydrol® aqueous polyurethane dispersions, or Dispercoll® aqueous polyurethane dispersions), for example.
  • PID water-based polyurethane dispersion
  • the second polymer dispersion D 2 comprising polymer P 2 may comprise a water-based polymer dispersion compatible for blending with D 1 .
  • Commercially available dispersions for polyesters, polyurethane-acrylates (PUA), polyacrylates, polyvinyl alcohol, polyvinyl acetate, acrylate modified polyolefins may be identified by various trade names, such as BASF (e.g., Acronal® aqueous polyacrylate dispersions) or Bayer (e.g., Bayhaydrol A® aqueous polyacrylate dispersions) or DSM (e.g., NeoCryl® acrylic copolymer dispersions or NeoPac® polyurethane-acrylate dispersions) or Bayer (e.g., Bayhdrol® E aqueous polyester dispersions) or Achema (e.g., PVAD® polyvinyl acetate dispersions) or Nuplex (e.g., Acropol® polyvinyl acetate dispers
  • a third polymer dispersion D 3 comprising polymer P 3 , as described in the foregoing paragraphs, may also be present if it is desired to include polymer P 3 into the coating.
  • D 3 may comprise a water-based polymer dispersion compatible for blending with D 1 and D 2 .
  • the coating composition may comprise total solid polymer content of between 20% to 60% by weight of the composition. In typical embodiments, the solid content is about 30% to 45%.
  • the ratio of polyurethane to polymer P 2 may vary between 80% to 90% by weight of polyurethane and 10% to 20% by weight of polymer P 2 .
  • the ratio of polyurethane to polymer P 2 and P 3 may vary between 80% to 90% by weight of polyurethane, 5% to 10% by weight of polymer P 2 , and 5% to 10% by weight of polymer P 3 , for example.
  • Polar organic co-solvents may be used in the coating composition to bring polyurethane and polymer P 2 , and optionally polymer P 3 into a common phase.
  • co-solvents include butoxydiglycol, butyl glycol, glycol ethyl ether, DEG ethyl ether, alkylene glycol ethers such as ethylene glycol monomethyl ether, ethylene glycol monohexyl ether, ethylene glycol monoethyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol monomethyl ether, diethylene glycol mono-n-butyl ether, propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether, ethylene glycol monoisobutyl ether, diethylene glycol monoisobutyl ether, propylene glycol monoisobutyl ether, ethylene glycol monophenyl ether, propylene glycol monophenyl ether
  • a method is provided to form the coating composition, comprising the steps of: providing a first polymer dispersion D 1 comprising polyurethane, providing a second polymer dispersion D 2 comprising a polymer P 2 having in comparison to polyurethane a higher peel strength to the surface to be coated and a higher percent elongation at break than polyurethane when cured, and blending D 1 and D 2 at standard ambient temperature and pressure. Quantities of D 1 and D 2 are provided such that polyurethane is a major component and P 2 is a modifier for imparting a flexible and peelable quality to the coating.
  • the blend of D 1 and D 2 may be further blended with particulate materials, such as slip resistant granules. It may also be mixed with various base additives such as polar or partially polar organic co-solvents, rheology modifiers, defoamers, leveling agents, and organic wax emulsions, biocides, anti-sagging agent, anti-cratering agent, color dyes, and combinations thereof. Where it is desired to introduce a third polymer P 3 as an adhesion and modulus modifier into the coating composition, the blend of D 1 and D 2 may be further mixed with a third polymer dispersion D 3 comprising a polymer P 3 . Polymer P 3 may have higher peel strength to the surface to be coated and/or higher percent elongation at break when cured than polymer P 2 , for example.
  • the step of mixing particulate materials to the composition may be carried out as a last step, after the blending of polymer dispersions D 1 , D 2 is carried out.
  • stirring is carried out until an even distribution of particles is achieved. This may be carried out under moderate stirring of 300 to 500 rpm for 5 minutes or more, for example.
  • a method of forming a peelable protective coating on a surface comprises the steps of providing a coating composition as described above, and applying the coating composition to the surface with an applicator, and curing the coating composition at standard ambient temperature and pressure.
  • the applicator may comprise a brush, a roller or a steel spreader, optionally with the aid of a squeegee.
  • the coating composition between 0.05 to 1 liter of coating composition is applied per square meter of surface to be coated, depending on the thickness of the coating to be applied.
  • the volume of coating composition may be applied over a single coat, or over several consecutive coats. Curing the coat is necessary to allow volatile solvents to vaporize, thereby enabling the polymers present in the composition to phase change into a hardened state.
  • the glass transition temperature (‘T g ’) of the polymer blend in the coating composition is above or well above room temperature.
  • the T g may be below room temperature so the coating is relatively soft and flexible. Drying of the coating at standard ambient temperature and pressure (IUPAC) may be carried out for 0.5 to 1 hour.
  • FIG. 3 shows a photograph of a coating that has been partially peeled from a floor surface. Due to the improved flexibility of the coating, it bends flexibly without cracking.
  • FIG. 4 is an optically magnified image taken of an uncoated vinyl tile surface used in this example.
  • FIG. 5 and FIG. 6 show images of the same vinyl tile coated with micron-sized organic polypropylene particles.
  • slip resistance was measured by British Pendulum Slip Resistance Tester under wet condition.
  • Gloss was measured by Glossmeter (20° and 60°) from Munro Instruments Ltd. The ability to remove the surface film was tested manually for peel strength with an Intron tester and tear properties of the coated film was visually evaluated during the peeling operation.
  • Table 1 below shows a table of results obtained from coatings with different particle sizes. Comparative examples were provided using 3M Scotchgard Stone ProtectorTM without particles (Comparative Example 1), a coating composition obtained from polyurethane and polyacrylate without adding particles (Comparative Examples 2), and a coating composition obtained from polyurethane and polyacrylate with various size of polypropylene particles (Examples 1 to 5).
  • FIG. 7 shows a bar chart comparing the gloss values and slip resistance (numerals above bars) of each example. It can be seen that increasing particle size provided increasing slip resistance. Coatings without particles had poorer slip resistance. However, gloss was generally lower with the inclusion of particles into the coating.
  • Table 2 below shows a table of results obtained from different coatings with 200 micron particles with varying particle content.
  • comparative examples were provided using 3M Scotchgard Stone ProtectorTM without particles (Comparative Sample 1), a coating composition obtained from polyurethane and polyacrylate without adding particles (Comparative Sample 2), and a coating composition obtained from polyurethane and polyacrylate with varying polypropylene particle content ranging from 1% to 5% by weight (Samples 1 to 5).
  • FIG. 8 shows a bar chart comparing the gloss values and slip resistance (numerals above bars) of each Example. Slip resistance appeared to be correlated to content of particles up to about 4% by weight since formulation with particle content greater than 4% did not return higher BPN values.
  • the variation of slip resistance was measured in a series of reproducibility tests (A, B, C) over varying polypropylene particle content ranging from 1% to 5% by weight, using a fixed particle size of 200 microns. Scotchgard Stone ProtectorTM coating without particles was used as a control.
  • FIG. 9 shows the variation of slip resistance under wet conditions. Slip resistance was consistent throughout the 3 tests, showing that the coating compositions were of uniform consistency throughout the samples that were prepared.
  • HDPE high density polyethylene
  • a first polyurethane dispersion (Bayhydrol UH 2593/1, Bayer Material Science) and second polyurethane dispersion (NeoRez R-2180, DSM NeoResins) were mixed by 5 minute-mild stirring at room temperature.
  • a small amount of co-solvents such as butoxydiglycol, butyl glycol, glycol ethyl ether and diethylene glycol ethyl ether, was added slowly into the mixture of polymer dispersions with stirring at 300 rpm for 5 minutes.
  • Polyurethane dispersions (Bayhydrol UH 240, Bayer Material Science) and polyacrylate dispersion (Bayhydrol A 2651, Bayer Material Science) were mixed by 5 minute-mild stirring at room temperature.
  • a small amount of co-solvents such as butoxydiglycol, butyl glycol, glycol ethyl ether and diethylene glycol ethyl ether, was added slowly into the mixture of polymer dispersions with stirring at 300 rpm for 5 minutes.
  • some additives such as defoamers, leveling agents, and organic wax emulsion, in addition, a thickener that is based on polyurethane, were incorporated into the mixture with the mild agitation.
  • micron-sized inorganic silica beads (Aerosil R 8125, Evonik Industries) were added.
  • the agitation speed was 300 to 500 rpm for 5 minutes until a homogeneous coating composition was obtained.
  • the coating composition was applied on a floor surface and left to dry. Similar to Example 3 and 4, the coating formed displayed film hardness, and was not transparent, but some hazy (a mild white) colored film.
  • Coatings described herein are suitable for use on any surface where protection, cleanliness, gloss, scuff resistance, and/or slip resistance is desirable.
  • Such surfaces include floors, food preparation surfaces, walls, stalls, counters, bathroom fixtures, etc.
  • the surfaces to be finished may be made from a large variety of materials including, but not limited to, acrylic tiles, ceramic tiles, marble, stone, metal and wooden laminate, terrazzo, ceramic, linoleum, plastics, rubber, concrete, vinyl composition tiles (“VCT”) and glass.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
US14/434,033 2012-10-24 2013-10-24 Peelable flexible coatings, compositions and methods thereof Abandoned US20150259544A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2012244167A AU2012244167B2 (en) 2012-10-24 2012-10-24 Peelable flexible coating, compositions and methods thereof
AU2012244167 2012-10-24
PCT/US2013/066573 WO2014066612A1 (en) 2012-10-24 2013-10-24 Peelable flexible coatings, compositions and methods thereof

Publications (1)

Publication Number Publication Date
US20150259544A1 true US20150259544A1 (en) 2015-09-17

Family

ID=50545253

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/434,033 Abandoned US20150259544A1 (en) 2012-10-24 2013-10-24 Peelable flexible coatings, compositions and methods thereof

Country Status (8)

Country Link
US (1) US20150259544A1 (enExample)
EP (1) EP2912126A4 (enExample)
JP (1) JP2016502571A (enExample)
KR (1) KR20150075411A (enExample)
CN (1) CN104937053A (enExample)
AU (1) AU2012244167B2 (enExample)
BR (1) BR112015009161A2 (enExample)
WO (1) WO2014066612A1 (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108239457A (zh) * 2016-12-23 2018-07-03 张家港康得新光电材料有限公司 水性可剥胶、其制备方法及应用
AU2015268700B2 (en) * 2015-12-14 2020-11-05 3M Innovative Properties Company Peelable color coating
US20210009819A1 (en) * 2019-07-09 2021-01-14 The Boeing Company Coatings for sterilization with uv light
DE102023205228A1 (de) * 2023-06-05 2024-12-05 Silu Verwaltung Ag Holzelement mit einer Beschichtung und Verfahren zur Herstellung eines Holzelements mit einer Beschichtung
US12453986B2 (en) * 2023-05-30 2025-10-28 Toyota Jidosha Kabushiki Kaisha Method of coating strippable coating material

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013205107B9 (en) 2012-10-24 2015-04-16 3M Innovative Properties Company Coatings, compositions, coated articles and methods
JP6329006B2 (ja) * 2014-06-10 2018-05-23 太洋塗料株式会社 剥離塗料塗布用ノズル、建材の製造方法及び剥離塗料の塗布方法
JP2015232099A (ja) * 2014-06-10 2015-12-24 太洋塗料株式会社 カラーマスキング塗料、建材及び建材スタック
CN104449376A (zh) * 2014-12-22 2015-03-25 常熟市金蝙蝠工艺家具有限公司 一种红木家具用新型石蜡的制备方法
CN104893521A (zh) * 2015-06-09 2015-09-09 苏州德翔装饰工程有限公司 一种防水耐潮的浴室用涂料及其制备方法
ITUB20151819A1 (it) * 2015-07-02 2017-01-02 Cores S R L Prodotto verniciante antisdrucciolo per il trattamento di superfici di calpestio, relativi uso, metodo di preparazione e kit produttivo
JP6706505B2 (ja) * 2016-02-09 2020-06-10 積水フーラー株式会社 プライマー組成物
CN106167677A (zh) * 2016-05-25 2016-11-30 惠州市德莱仕科技有限公司 一种水性可剥离涂料
CN105860739A (zh) * 2016-06-03 2016-08-17 苏州市奎克力电子科技有限公司 一种化学可剥离高温绝缘漆
WO2018044819A1 (en) * 2016-08-30 2018-03-08 3M Innovative Properties Company Surface protector coating
CN108841306B (zh) * 2018-05-04 2021-03-12 广州市鼎茂新材料科技有限公司 一种水性印花台板涂料及其制备方法
CN108676483B (zh) * 2018-05-29 2020-07-10 广州市鼎茂新材料科技有限公司 一种用于可撕标签的水性涂料及一种可撕标签
CN112662097A (zh) * 2019-10-16 2021-04-16 斯科瑞新材料科技(山东)股份有限公司 一种水溶性阻燃防护膜的制备
CN112940601A (zh) * 2019-11-26 2021-06-11 广州四面体新材料科技有限公司 一种增强耐磨性的紫外光固化涂料及其制备方法
CN112724813B (zh) * 2020-12-29 2022-04-08 苏州德达材料科技有限公司 一种皮革覆膜材料及其制备方法
CN114456697B (zh) * 2022-01-26 2023-06-02 中山市大一涂料有限公司 一种聚氨酯涂料及其制备方法和应用
KR102508375B1 (ko) * 2022-07-04 2023-03-10 주식회사 해광 박리 증진용 프라이머 조성물 및 이를 포함하는 도막
CN115403981B (zh) * 2022-10-10 2023-08-29 长沙岱华科技有限公司 一种水性保护胶及其制备方法
CN116589888A (zh) * 2023-05-22 2023-08-15 四川长晏科技有限公司 一种改性可剥离凝胶、涂层及其制备方法
TW202449086A (zh) * 2023-06-09 2024-12-16 日商關西塗料股份有限公司 可剝離之汽車用水性塗料組成物及多層塗膜形成方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601808A (en) * 1994-04-08 1997-02-11 L'oreal Cosmetic compositions for application to the nail
US20060216250A1 (en) * 2004-10-20 2006-09-28 Schultz Thomas M Nail polish compositions comprising a water or alcohol soluble polyamide
US20070185003A1 (en) * 2006-01-18 2007-08-09 Invista North America S.A.R.L. Non-textile polymer compositions and methods
US20120276297A1 (en) * 2009-11-25 2012-11-01 Diversey, Inc. Surface coating system and method
US20140087156A1 (en) * 2011-05-25 2014-03-27 Diversey, Inc. Surface coating system and method of making and using same
US20140087070A1 (en) * 2011-05-25 2014-03-27 Diversey, Inc. Surface coating system and method of using surface coating system
US20150291827A1 (en) * 2012-10-24 2015-10-15 3M Innovative Properties Company Coatings, compositions, coated articles and methods

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0931433A (ja) * 1995-07-13 1997-02-04 Mitsui Toatsu Chem Inc 皮膜形成が速い飛石防止用固着剤
US5830443A (en) * 1997-07-16 1998-11-03 Lee; James K. Easy peelable flexible nail polish composition
US20050027024A1 (en) * 2000-03-23 2005-02-03 Zhiqiang Zhang Peelable coating composition
WO2007108905A1 (en) * 2006-03-17 2007-09-27 3M Innovative Properties Company Liquid composition to generate a removable temporary protection film, based on aqueous dispersions of polyurethane
JP5484319B2 (ja) * 2007-05-17 2014-05-07 ディバーシー・インコーポレーテッド 表面コーティングシステムおよび方法
JP5463228B2 (ja) * 2009-08-07 2014-04-09 日東電工株式会社 剥離剤、離型材および粘着テープ
JP5517537B2 (ja) * 2009-09-25 2014-06-11 株式会社リンレイ 可剥離性床用被覆組成物
KR20120115245A (ko) * 2009-11-25 2012-10-17 디버세이, 인크 표면 코팅 시스템 및 표면 코팅 시스템의 사용 방법
US20120321872A1 (en) * 2010-01-13 2012-12-20 Pazkar Ltd. Two-component water-based polyurethane compositions and coatings

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601808A (en) * 1994-04-08 1997-02-11 L'oreal Cosmetic compositions for application to the nail
US20060216250A1 (en) * 2004-10-20 2006-09-28 Schultz Thomas M Nail polish compositions comprising a water or alcohol soluble polyamide
US20070185003A1 (en) * 2006-01-18 2007-08-09 Invista North America S.A.R.L. Non-textile polymer compositions and methods
US20120276297A1 (en) * 2009-11-25 2012-11-01 Diversey, Inc. Surface coating system and method
US20140087156A1 (en) * 2011-05-25 2014-03-27 Diversey, Inc. Surface coating system and method of making and using same
US20140087070A1 (en) * 2011-05-25 2014-03-27 Diversey, Inc. Surface coating system and method of using surface coating system
US20150291827A1 (en) * 2012-10-24 2015-10-15 3M Innovative Properties Company Coatings, compositions, coated articles and methods

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2015268700B2 (en) * 2015-12-14 2020-11-05 3M Innovative Properties Company Peelable color coating
CN108239457A (zh) * 2016-12-23 2018-07-03 张家港康得新光电材料有限公司 水性可剥胶、其制备方法及应用
US20210009819A1 (en) * 2019-07-09 2021-01-14 The Boeing Company Coatings for sterilization with uv light
US12134709B2 (en) * 2019-07-09 2024-11-05 The Boeing Company Coatings for sterilization with UV light
US12453986B2 (en) * 2023-05-30 2025-10-28 Toyota Jidosha Kabushiki Kaisha Method of coating strippable coating material
DE102023205228A1 (de) * 2023-06-05 2024-12-05 Silu Verwaltung Ag Holzelement mit einer Beschichtung und Verfahren zur Herstellung eines Holzelements mit einer Beschichtung

Also Published As

Publication number Publication date
WO2014066612A1 (en) 2014-05-01
BR112015009161A2 (pt) 2017-07-04
EP2912126A1 (en) 2015-09-02
KR20150075411A (ko) 2015-07-03
EP2912126A4 (en) 2016-05-25
AU2012244167B2 (en) 2014-05-29
JP2016502571A (ja) 2016-01-28
AU2012244167A1 (en) 2014-05-08
CN104937053A (zh) 2015-09-23

Similar Documents

Publication Publication Date Title
AU2012244167B2 (en) Peelable flexible coating, compositions and methods thereof
AU2013205107B9 (en) Coatings, compositions, coated articles and methods
CN101472968B (zh) 水性聚氨酯地板涂层组合物
CA2779374A1 (en) Surface coating system and method of using surface coating system
US7527861B2 (en) Jobsite-renewable multilayer floor finish with enhanced hardening rate
WO2016038070A1 (en) Coating composition for wood finishing
CN110023418A (zh) 含耐磨涂料的木质基板
WO2009087922A1 (ja) 可剥離性床用被覆組成物
US20250282963A1 (en) Water-based coating compositions for scuff and scratch resistance
US20120053276A1 (en) Surface polish and wear coating
JP6287615B2 (ja) 活性エネルギー線硬化型樹脂組成物、硬化皮膜及び帯電防止処理光学フィルム
AU2015268700B2 (en) Peelable color coating
WO2023182404A1 (ja) 塗膜形成用組成物、塗膜、及び塗膜付き物品
KR102602458B1 (ko) 다층 코팅용 도료 조성물
CA3039123A1 (en) Uv curable abrasion resistant coating
WO2018044819A1 (en) Surface protector coating
JP2023098558A (ja) 無機質ガラスコーティング剤
CA3039649C (en) Wood substrate including an abrasion resistant coating
JP6126838B2 (ja) フロアーポリッシュ用組成物
US20240400843A1 (en) Scuff and mar resistant coating compositions
CN116355525A (zh) 无机质玻璃涂布剂

Legal Events

Date Code Title Description
AS Assignment

Owner name: 3M INNOVATIVE PROPERTIES COMPANY, MINNESOTA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEE, DOO-HYUN;FATTAHI, FARHAD;CHEN-HO, KUI;AND OTHERS;SIGNING DATES FROM 20150408 TO 20150413;REEL/FRAME:035756/0403

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION